{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "620307004",
    "entityType": "User",
    "nonce": "0x6ae65aeb256858b52c6daf45c5bb2305617927dbcfbba7fe438d1b67e64bb0a4",
    "signature": "0x135666c09c2a07e02635d796222081e4f825f1c15fb66c906c3ee417556f45c01656f00aa5521e3aecc40e98b667797f78f385883470683bf035af35cb2d08c81b",
    "signer": "0xa1F606584fdE30bB7d4BE2EbeC98A5F95E4559f4",
    "userId": "786922215"
  }
}